William kiel



UNITED STATES PATENT FFICE.

WILLIAM KIEL, or BUTLER, NEW JERSEY, ASSIGNOR TO KIEL, BUTLER & TURNBULL, on NEW YORK, N. Y.

VULCANIZED PLASTIC COMPOUND.

SPECIFICATION forming part of Letters Patent No. 412,264, dated October 8, 1889. Application filed January 19, 1889. Serial No. 296,915. (fipeoimena) To all whom it may concern: product is toughened. The compound pre- Be it known that I, \VILLIAM KIEL, a citipared by the above method, or such other zen of the United States, residing at Butler, in methods as may be found convenient, is then the county of Morris, in the State of New ready to be put into molds or otherwise Jersey, have invented a certain Improvement treated to produce any desired form and then 5 5 in Vulcanized Plastic Compounds. vulcanized. In the process of vulcanization The following is a full, clear, and exact dethe pressure, the heat, and the time vary ac scription of my invention. cording to the nature of flexibility and hard- My invention consists in an improvement ness of the material to be produced.

in vulcanized plastic compounds, which can The time and pressure applied in the probe used in the place of hard and soft rubber, oess of vulcanization of hard rubber will, if bone, ivory, wood, and other similar" mateapplied to my new compound, producea hard rials. I obtain this result by using wood as material, and in like manner the time and an ingredient in a new vulcanized plastic pressure applied in the process of vulcaniza- :5 compound. tion in the manufacture of soft rubber will, if

I am well aware that attempts have been applied to my new compound, produce a soft made to mix fibrous matters with rubber commaterial; but I do not confine myself to the pounds; but in such attempts such fibrous limitswithin which these respective processes materials have been used solely as adulterof vulcanization vary.

2o ants of rubber, and the resulting product is I have described my new compound as made an inferior grade of rubber. So far asI know of wood, sulphur, oil or pitch, and crude rubwood has not been heretofore a constituent ber united by vulcanization; but it is to be part of a vulcanized plastic rubber compound. understood that any equivalent of oil or pitch My invention consists of an improvement in may be used-such as, for example, tallow or 2 5 vulcanized plastic compounds, of which the even beeswax, or generally any commingling ingredients are as follows: wood, sulphur, vulcanizable substance-the principal feature oil or pitch, or other commingling vulcanizof novelty and value in my composition beable substance, and crude rubber. I prefering the use of wood as a constituent part of ably combine equal weights of these ingrea vulcanizable compound, giving thereto new 0 clients, and I use crude rubber which has been and valuable properties. The oil acts as a washed and dried. commingling vulcanizable agent, and at the To prepare my new compound I saw or same time tends to toughen the finished vulotherwise convert the wood into some small canized product. form, and from it I remove all moisture by My new compound when vulcanized in a 35 artificial or other means, and, if necessary, hard form is in its texture and general quali- 8 5 wash out any acids that may be in it. The ties similar to horn and whalebone. As wood dry particles of wood, the sulphur, the oil or is free from the grit which is always found in pitch, or other commingliug vulcanizable subcrude rubber gum, my new compound in its stance, and the crude rubber are then mixed hard form has much less grit in it than hard 40 together. rubber or any of its compounds hitherto One of the processes of manufacturing my known. Furthermore, it is much more bulky, new compound is as follows: I mix the wood, for equal weights, and is also much cheaper sulphur, and oil or pitch together and subthan hard rubber. ject this mixture to vulcanization. To the In its soft form my new compound when 45 mass thus obtained I add crude rubber by vulcanized is lighter in weight than soft rub- 5 passing the mass and rubber through heated her and its compounds as now made, and it rollers, such as are ordinarily used in the is, for equal weights, more bulky and at the manufacture of rubber. Beeswax may be same time cheaper than soft rubber. added in small quantities to the compound I do not confine myself to the exact propor go before vulcanization. By it the vulcanized tions herein indicated, and I do not confine IOO 1. A vulcanized plastic compound consisting' of Wood, sulphur, a commingling vulcan- 15 izable substance, and crude rubber united by vulcanization, substantially as described.

2. A vulcanized plastic compound consisting of Wood, sulphur, oil, and crude rubber united by vulcanization, substantially as de- 20 scribed.

I WILLIAM KIEL.

\Vitnesses:

SHERMAN EVARTS, THOMAS HUNT. 

